The facts behind e cigarettes and their health risks The Washington Post The impact of electronic cigarettes on airway epithelial barrier integrity in preclinical mouse model American Journal of Physiology Lung Cellular and Molecular Physiology American Physiological Society Topic: The Triangulum: Tobacco, Marijuana, and E Cigarettes. Contributions to Thirdhand Smoke and Implications for Human Exposure Research & Commentary: Cities and States Consider Increasing Tobacco Age Limit to 21, Regulating ENDS Like Tobacco Products The Heartland Institute